In which type of ecosystem are exotic species particularly threatening?

• A. Islands
• B. Grasslands
• C. Tundras
• D. Deserts

Answer: (A)

Verified step by step guidance

1. Understand the concept of exotic species: Exotic species, also known as invasive species, are organisms that are introduced to a new environment where they are not native. They can cause harm to the local ecosystem by outcompeting native species for resources.
2. Consider the characteristics of island ecosystems: Islands often have unique ecosystems with species that have evolved in isolation. This makes them particularly vulnerable to exotic species, as the native species may not have developed defenses against new competitors or predators.
3. Evaluate the impact of exotic species on islands: Exotic species can disrupt island ecosystems by preying on native species, introducing diseases, or competing for limited resources. This can lead to a decline or extinction of native species.
4. Compare island ecosystems to other ecosystems: While exotic species can be threatening in any ecosystem, islands are especially susceptible due to their isolation and limited biodiversity. Grasslands, tundras, and deserts may have more resilience due to larger areas and more diverse species interactions.
5. Conclude why islands are particularly threatened: The isolation and unique biodiversity of islands make them more vulnerable to the impacts of exotic species, which can lead to significant ecological imbalances and loss of native species.